DESCRIPTIONS OF PLATES. 



Plate 1. 



Fig. 1. Ammobaculites reophaciformis Cushman. Front view. X50. 



2-4. Trochammina advena, new species. Fig. 2, dorsal view; fig. 3, peripheral view; 

 fig. 4, ventral view. X50. 

 6. Carterina spiculotesta (Carter), a, ventral view X75; b, portion of surface 

 enlarged, showing arrangement ot the spicular bodies. X400. 



6. Textularia agglutinans d'Orhigay. Front view. X50. 



7. Textularia flondana Cushman. Front view. X65. 



8, 9. Bolivina pulchella (d'Orbigny). Front views of two specimens, showing char- 

 acteristic ornamentation and elongate aperture. X75. 

 10. Bolivina compacta Sidebottom. Front view, showing peculiar ornamentation of 

 the surface. X75. 



Plate 2. 



Fig. 1. Textularia. rugosa Reuss? Front view, showing traces of reentrants. X60. 



2. Textularia candeiana d'Orbigny. Front view, showing characteristic enlarged 



later chambers. X60. 



3. Textularia mayori, new species. Front view. X60. 



4. Textularia conica d'Orbigny. Front view. X60. 



5,6. Bigenerinanodosaria d'Orbigny. Fig. 5, front view of microspheric specimen, 

 showing small textularian early development, the larger portion of the 

 test uniserial; fig. 6, megalospheric specimen in which the test is largely 

 composed of textularian chambers, the uniserial adult portion much smaller 

 in size. X50. 



7, 8. VaUndina oviedoiana d'Orbigny. Fig. 7, front view; fig. 8, apertural view. X50. 



Plate 3. 



Fios. 1,2. Clavulina nodosaria d'Orbigny. Front view. X60. 



3. Clamdina tricarinata d'Orbigny. Front view. X50. 



4. Clawlina sp.? Front view. X50. 



5, 6. Bolivina mayori, new species. Front views. Fig. 5 showing adult specimen 

 with a senescent stage in which the last chamber extends across the te 

 and the entire size of the chambers reduced. X75. 



7. Buliminoides vnlliamsoniana (H. B. Brady). Front view. X75. 



8. Bolivina limhata H. B. Brady var. costulata, new variety. Front view. X75. 



9. Virgvlina punctata d'Orbigny. Front view. X75. 



10. Bolivina striatula, new species. Front view. X75. 



11. Vemeuilina spinulosa Reuss. Front view. X75. 



Plate 4. 



Fig. 1. Nodosaria (Glandulina) rotundata (Reuss). Front view. X75. 



2. Nodosaria sp.? juv. Front view. X75. 



3. Cristellaria sp.? juv. Front view. X75. 



4. Polymorphina sp.? Front view. X75. 



5, 6. Polymorphina regina (H. B. Brady, Parker, and Jones). Fig. 5, adult specimen 



showing smooth later chambers; fig. 6, front view. X75. 

 7y 8. Polymorphina pulchella (d'Orbigny). Front views. X75. 

 9. Polymorphina gibba d'Orbigny. Front view. X75. 

 10, 11. Polymorphina lactea (Walker and Jacob), var. Fig. 10, attached specimen 

 showing peculiar stolon-like processes; fig. 11, free specimen. X75. 



